# /DVPREL1

Optimization Keyword Linearly relates a design variable to an analysis model property.

(1)
${P}_{i}=C0+\sum _{i}\left(COE{F}_{i}\cdot DVI{D}_{i}\right)$

## Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
/DVPREL1/dvp_ID
title
prop_typ prop_ID prop_fid C0
DVID1 COEF1
DVID2 COEF2
etc etc
DVIDN COEFN

## Definitions

Field Contents SI Unit Example
dvpl_ID Identification number.

(Integer > 0)

title Title.

(Character, maximum 100 characters)

prop_typ Property type. The type is specified immediately after the corresponding /PROP, as: 1
= 1
/PROP/TYPE1 (SHELL)
= 2
/PROP/TYPE2 (TRUSS)
= 3
/PROP/TYPE3 (BEAM)
= 11
/PROP/TYPE11 (SH_SANDW)

(Integer ≥ 0)

prop_ID Property identifier (/PROP/...).

(Integer > 0)

prop_fid Property field identifier to be related with design variable. Depending on various property types (prop_typ), the available options are different. 1

(Integer > 0)

C0 Constant in the equation that defines the relationship between the design variable and the property.

Default = 0.0 (Real)

DVIDi Design variable identifier (/DESVAR) that is related to the property.

No default (Integer > 0)

COEFi Coefficient in the equation that defines the relationship between the design variable and the property.

Default = 1.0 (Real)

## Example

/DVPREL1/1
related design variable
### Related design variable to design variable identifier 1 (defined in /DEVSVAR) is thickness of shell property ID 2000329 (which defined with /PROP/SHELL)
### prop_typ=1: property type is /PROP/SHELL
### prop_ID=2000329 : property identifier is 2000329
### prop_fid=1: Thickness due to prop_typ=1
### DVID1=1: Design variable identifier (/DESVAR) is 1
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
# prop_typ   prop_ID  prop_fid                  C0
1   2000329         1                 0.0
#    DVID1               COEF1
1                 1.0
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|